| Two wings, better Time's arrows ReprintsFrom about 40,000 years ago microliths are common. |
| The stone tool assemblage includes convex end scrapers, bifacially-flaked small knives, and flattened discoids and microliths. |
| The kidneys also had focal luminal collecting duct microliths and urate deposition. |
| Small worked flint blades known as microliths were perhaps the barbs of spears and harpoons with wooden shafts. |
| We know that similar microliths were used as arrow points in predynastic Egypt. |
| This week the subject is the beautifully crafted flint of the Mesolithic period, known as microliths. |
